This is Yeah Racing RC Ball bearings should always be your first upgrades, it reduces friction for less rolling resistance, and that means higher speed and longer the running times. RC Ball bearings hardly require maintenance and last a lot longer than stock Oilite bushings.
For :Tamiya TT01
Material : Steel
Total Bearing (20 Pcs)
-YB6011M 5mm x 8mm x 2.5mm (4pcs)
-YB6014M 5mm x 11mm x 4mm(12pcs)
-YB6020M 8mm x 12mm x 3.5mm (4pcs)